David J. Weber (1940-2010) was the founding director of the Clements Center for Southwest Studies at Southern Methodist University and the author of more than twenty books on the Southwest borderlands. William deBuys is the author of numerous books, including Salt Dreams: Land and Water in Low-Down California, A Great Aridness: Climate Change and the Future of the American Southwest, and the Pulitzer Prize nonfiction finalist River of Traps: A New Mexico Mountain Life, with photographs by Alex Harris.